雙模態寬阻帶之基板合成波導濾波器

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姓名

林家慶(Jia-Ching Lin) 查詢紙本館藏

畢業系所

電機工程學系

論文名稱

雙模態寬阻帶之基板合成波導濾波器
(Dual-mode Wide Stopband Substrate Integrated Waveguide Filter)

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摘要(中)

本論文研究一種使用基板合成波導(Substrate Integrated Waveguide)的三階雙工器(Diplexer)，雙模態共振腔的正交〖TE〗_102以及〖TE〗_201模態可以實現雙通道的傳輸，使不同中心頻率和比例頻寬的帶通濾波器能合併成一個，雙模共振腔以及腔體之間的耦合可以獨立控制，使得在中心頻率的選擇和比例頻寬的調整提供設計上的靈活度。
第一個電路在使用兩個雙模腔體和兩個單模的腔體所組成，中心頻率為12GHz和14GHz，3dB比例頻寬分別是5%和4.4%，基於雙模腔體互相正交的特性，調整輸入/輸出端口的饋入線長度寬度和調整雙模腔體和單模腔體之間的耦合窗位置，可以有效控制比例頻寬和抑制高階的模態，因此可以實現雙模SIW雙工器。
第二個電路為調整三階基板合成波導雙工器中的單模共振腔，藉由矩形波導截止頻率公式可以得知腔體寬長比、頻率比和模態發生順序的關係，設置耦合窗口在腔體中心以及諧波交錯，使通帶外的抑制效果更好，透過將輸出端口放置在電場最弱的地方可以達到一定的隔離度實現寬阻帶雙模SIW雙工器。
第三個電路為三階基板合成波導雙頻帶濾波器，使用與第二片相同的設計方法，耦合窗口以及透過腔體長寬比，諧波交錯這兩種方法，可以實現寬阻帶SIW雙頻帶濾波器。

摘要(英)

This thesis introduces a substrate integrated waveguide (SIW) third-order diplexer. The orthogonal modes of 〖TE〗_102 and 〖TE〗_201 in a dual-mode cavity are exploited to realize the dual channel transmission. Two third-order SIW filter with different central frequencies and fractional bandwidths are synthesized and designed. both the central frequencies and fractional bandwidths of the two channels can be designed flexibly and independently by controlling the resonant frequencies and mutual couplings of cavities, especially dual-mode cavity.
The first circuit consists of two dual mode cavities and two single mode cavities. The central frequencies are 12 GHz and 14GHz, and the 3dB fractional bandwidth is 5% and 4.4%, respectively. Based on the properties of these orthogonal dual mode cavities, adjusting the length and width of the feeding line at the input/output port and adjusting the position of the coupling window between the dual-mode cavity and the single-mode cavity can effectively control the fractional bandwidth and suppress higher-order modes. In addition, the position of the coupling window between the dual-mode resonator and the single-mode resonator could help spurious higher order modes. Thus, a dual-mode SIW duplexer can be implemented.
The second circuit uses rectangular single mode cavity to replace the first one′s square cavity. The relationship between the cavity W/L, the frequency ratio and mode occurrence sequence can be known by the cut-off frequency formula of rectangular waveguide. The coupling window is set at the center of the cavity and use the harmonics staggered to suppress the performance of outside the passband. Wide stopband dual mode SIW diplexer can be realize
The third circuit is a wide stopband third-order SIW dual-band filter, designed using the same method as the second one. In addition, by two kinds of suppression techniques, the harmonic staggered technique and centered coupling windows, wide stopband SIW dual-band filter can be achieved.

關鍵字(中)

★ 基板合成波導
★ 濾波器
★ 寬阻帶
★ 雙模態

關鍵字(英)

★ Substrate Integrated Waveguide
★ Filter
★ Wide Stopband
★ Dual-mode

論文目次

摘要 i
Abstract ii
誌謝 iii
目錄 iv
圖目錄 v
表目錄 viii
第一章緒論 1
1-1 研究動機 1
1-2 文獻回顧 2
1-3 論文架構 3
第二章基板合成波導帶通濾波器 4
2-1 帶通濾波器的基本設計原理 4
2-2 基板合成波導 14
第三章運用基板合成波導設計雙工器 18
3-1 雙工器基本原理及架構 18
3-2 三階基板合成波導帶通濾波器設計 25
3-3 三階基板合成波導雙工器模擬及量測 35
第四章寬阻帶雙模基板合成波導濾波器 47
4-1 寬長比對SIW模態影響 47
4-2 三階寬阻帶基板合成波導雙工器 49
4-3 三階寬阻帶SIW雙頻帶帶通濾波器 57
第五章結論 62
參考文獻 64

參考文獻

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[6] K. Zhou, C. X. Zhou, and W. Wu, "Compact SIW Diplexer With Flexibly Allocated Bandwidths Using Common Dual-Mode Cavities," IEEE Microwave and Wireless Components Letters, vol. 28, no. 4, pp. 317-319, 2018, doi: 10.1109/LMWC.2018.2805881.
[7] K. Zhou, C. Zhou, and W. Wu, "Compact planar substrate-integrated waveguide diplexers with wide-stopband characteristics," International Journal of RF and Microwave Computer-Aided Engineering, vol. 30, no. 6, p. e22179, 2020/06/01 2020.
[8] K. Zhou and K. Wu, "Miniaturized Diplexer Using Dual Half-Mode SIW Cavity for 5G Sub-6 GHz Communications This paper is dedicated to the Memory of Professor Mojgan Daneshmand and her family," in 2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, 5-10 July 2020 2020, pp. 1821-1822, doi: 10.1109/IEEECONF35879.2020.9330295.
[9] S. Han, K. Zhou, J. Zhang, C. Zhou, and W. Wu, "Novel Substrate Integrated Waveguide Filtering Crossover Using Orthogonal Degenerate Modes," IEEE Microwave and Wireless Components Letters, vol. 27, no. 9, pp. 803-805, 2017, doi: 10.1109/LMWC.2017.2734842.
[10] K. Zhou and K. Wu, "Wide-Stopband Substrate-Integrated Waveguide Filtering Crossovers With Flexibly Allocated Channel Frequencies and Bandwidths," IEEE Transactions on Microwave Theory and Techniques, vol. 69, no. 7, pp. 3264-3274, 2021, doi: 10.1109/TMTT.2021.3067886.
[11] H. Uchimura, T. Takenoshita, and M. Fujii, "Development of a "laminated waveguide"

指導教授

凃文化(Wen-Hua Tu)

審核日期

2022-8-22

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